Recovery of platinum in catalytic gas reactions



 

1. IN THE RECOVERY OF PLATINUM USED AT LEAST AS A COMPONENT OF A PLATINUM CONTAINING CATALYST IN A CATALYTIC GAS REACTION CARRIED OUT AT ELEVATED TEMPERATURE, THE CONNECTION IN SERIES BEHIND THE CATALYST OF A GAS-PERVIOUS ARRANGEMENT HAVING A SURFACE CONSISTING OF AT LEAST ONE BASE METAL OF THE 4TH AND 5TH GROUPS OF THE PERIODIC SYSTEM WHICH ARE TEMPERATURE-RESISTANT AND RESISTANT TO THE PASSING GASES. 